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Partial sequence of the wild-type (WT) and mutant PR-1a promoters. The sequence of the wild-type PR-1a promoter is shown from nucleotides −900 to −801 (first row) and from −600 to −501 (second row), taking the transcription start site as +1. Binding sites for transcription factors NtWRKY12 (WK2 and WK1), TGA1a (as-1), and Myb1 (MBSII) are underlined and mutant sequences (blocked) are shown below the wild-type sequence. The lines in mutants Δ32 and Δ85 represent deleted nucleotides.
